6 resultados para Group Segmentation

em Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco


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We conduct experiments to investigate the effects of different majority requirements on bargaining outcomes in small and large groups. In particular, we use a Baron-Ferejohn protocol and investigate the effects of decision rules on delay (number of bargaining rounds needed to reach agreement) and measures of "fairness" (inclusiveness of coalitions, equality of the distribution within a coalition). We find that larger groups and unanimity rule are associated with significantly larger decision making costs in the sense that first round proposals more often fail, leading to more costly delay. The higher rate of failure under unanimity rule and in large groups is a combination of three facts: (1) in these conditions, a larger number of individuals must agree, (2) an important fraction of individuals reject offers below the equal share, and (3) proposers demand more (relative to the equal share) in large groups.

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Feature-based vocoders, e.g., STRAIGHT, offer a way to manipulate the perceived characteristics of the speech signal in speech transformation and synthesis. For the harmonic model, which provide excellent perceived quality, features for the amplitude parameters already exist (e.g., Line Spectral Frequencies (LSF), Mel-Frequency Cepstral Coefficients (MFCC)). However, because of the wrapping of the phase parameters, phase features are more difficult to design. To randomize the phase of the harmonic model during synthesis, a voicing feature is commonly used, which distinguishes voiced and unvoiced segments. However, voice production allows smooth transitions between voiced/unvoiced states which makes voicing segmentation sometimes tricky to estimate. In this article, two-phase features are suggested to represent the phase of the harmonic model in a uniform way, without voicing decision. The synthesis quality of the resulting vocoder has been evaluated, using subjective listening tests, in the context of resynthesis, pitch scaling, and Hidden Markov Model (HMM)-based synthesis. The experiments show that the suggested signal model is comparable to STRAIGHT or even better in some scenarios. They also reveal some limitations of the harmonic framework itself in the case of high fundamental frequencies.

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As a result of the natural evolution of the economy, ever-changing, unpredictable and cyclical, companies must adapt as far as possible to the changes that have taken place in order to continue with their normal operating activities. Likewise, they should also try to maintain a structure for long-term growth, trying at all times to generate the maximum value. The main objective of this project is to provide financial advisory services to a business group, trying to forward solutions and measures that according to the author can be effective. For this end, the situation of the group in question is analysed from early 2008 to the present day, examining its evolution, what steps have been taken together with their corresponding results and the economic-financial situation of the company at the end of last year. Contact with the company was kept throughout the process of analysis and assessment trying to take advantage of the feedback generated so that the appropriate measures can be adopted if the management considers it to be adequate.

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Analisis del sector de maquina herramienta y sus principales estrategias y analisis de una empresa importante del sector (DANOBAT GROUP).